Means for forming and attaching welts



Jan. 2, 1923.

I P. A. HERB.

MEANS FOR FORMING AND ATTACHING WELTS.

FILED IUNE 7.191 9- 2 SHEETS-SHEET l.

INVENTOR P WITNESSES:

Jan. 2, 1923.

P. A. HERB.

MEANS FOR FORMING-AND ATTACHING WELTS.

2 swans-sun FILED JUNE 7,19l9.

TJ'ORNEY l atentetl den. 2, i923.

PARK A. HERE,

rash

TUBING COMPANY, A CORPORATION OF NEW JERSEY.

MEANS FOR FORMING AND ATTACK-ENG WELTS.

Application filed June 7, 1919. Serial No. 302,511.

To all whom it may concern Be it known that I, PARK A. Hnnn, a citizenof the United States, residing at. Hillside, in the county of Union andState of New Jersey, have invented certain new and useful Improvementsin Means for Formingand Attaching TVelts, of which the following is aspecification, reference being had there in to the accompanyingdrawings.

This invention aims to provide a new device for conducting a welt striptoa shoe sole preliminary to stitching the strip thereto with a flangeor vertically arranged portion in a contiguous reinforcing position to afeather channeled slightly inward from the edge of the sole. It furtheraims to provide a device of such construction that it will not requirethe operator tomanipulate the strip while it is being stitched by asewing machine to the sole leaving her free to han dle the shoe soleitself. a device which will bend or crease a strip lengthwise intosubstantially right angular form while it is being conducted to thestitching point and without requiring a separate creasing or bendingoperation before the strip reaches the operator. Further, it aims toprovide a device which will leave the operators view of the stitchingpoint unobstructed. And finally it aims to so construct and organize theattachment that a minimum of friction will be opposed to thework-advancing mechanism of the sewing machine by the passage of thestrip through the attachment.

The construction comprises essentially a strip-guide having an angularguiding channel and a cooperating and reciprocating member which movestransversely of the extent of the guiding channel and intermittentlystrikes against a strip passing throughthe strip-guide. Edge-guides areprovided to gauge the edges of the respective flanges of the foldedstrip after it has been bent by the reciprocating member-and one ofthese edge-guides is preferably made adjustable so that an edge of thestrip and the margin of the sole may be flush. The bending orreciprocating member is operated by a movable or reciprocating-part ofthe machine,

in the present instance, being connected toa rcciprocatory take-up.

it will be seen that the chief characteristic It also aims to providefeature of the described method of operation is the formation .of theflat strip into a longitudinally channeled strip in advance of thestitching by a compressive bending force to produce with precision asharply defined shape of cross-section desired while the feed of thework is in progress and without imposing upon the latter an excessiveresistance consequent upon the shaping of the strip suitable forperforming its required; in the method ofiice in the shoe structure. offorming and attaching the welt strip, as performed by the presentmechanism, the lateral bending thrust upon the strip is applied whilethe work is stationary between stitch-spac-ing advance movements andiswholly relieved during advance of the work, thereby facilitatingmovement of the strip with the shoe sole by removal of objectionableresistance to its travel relatively to the stitching mechanism.

It is old in the prior art to bend the flat strip or welt by means ofstationary guides or by passing it through an angularly shaped openingin a stationary member immediately before feeding it tothe stitchingmechanism.

By'these means, however, the strip or welt is bent only temporarily andis not pressed after being bent to make the crease permanent.Furthermore if in these devices it is attempted to place the guidessufiiciently close together or form the angularly shaped openingsufficiently small to give a more or less permanent bend the resistanceto the or welt is so great 'as to passage of the strip tend to score orabrade its surface and stretch or strain thestrip to an undersirableextent. Also an extra strain is pla'cedon the feeding mechanism and theadvance of the work is impeded. Applicant believes he is the first toconstruct a device in combination with a machine for attaching the stripor welt which bends it and then compresses it by means of a positivelymoving member,

and which is so operated as to press on the strip only when it isnotbeing fed forwardly by the feeding mechanism.

I The invention is illustrated in the accom; panying drawings 1n whichFig. 1 represents a rear side elevation of a cylinder-arm or hornmachine of the type disclosed in the patent to Park A. Herr,No.l,265,4t8, dated lllay '7, 1919. Fig. E2 is a front side elevation oithe attachment and the immediately adj acent portion of the horn. Fig. 3is an end elevation of the same. Fig. 4c shows in spaced perspective thereciprocating bending or creasing member and its channeled carrier. Fig.5 is a perspective of the strip. guide, and associated edge-guide andbend or crease maintaining member. Fig. 6 is a perspective detail of-thebend or crease main taining member alone and Fig. '7 represents the workdone with the attachment.

The attachment, as illustrated, is applied to a sewing machine having acylindrical or horn-shaped work-supporting arm 1 above which isvertically spaced the head 2 of the bracket-arm. A needle 3 carried by anee dle-bar 4 is operatively sustained and actuated in the head 2 andfrom. a main-shaft 5 in any suitable manner as disclosed, for instance,in my prior Patent No. 1,265,ll8, granted May 7, 1918, the needle beingreciprocated up and down through the work and cooperating with theloop-taking device (not shown), and being given as well bodily sidewiseor lateral movement in substantially a plane transverse the axis or thehorn so as to feed the work. No feed-dog is employed in the machineillustrated, but

it will be understood that the invention could be employed on a machinein which the work is advanced by a feed dog.

On the main-shaft 5 is a barrel-cam 6 Which is peripherally grooved asindicatedat 7 to actuate the short end 8 of a take-up member 9 forcontrolling the needle-thread. To the take-up 9 at 10 is universallyjoined one end of a link 11 whose opposite end 12 is also universallyconnected to a bellcrankis threaded into the bottom lever 13 which isfulcrumed onthe pin 14 journaled in the boss 15 carried by a bracket 16upon a plate 17. The bracket 16 is so arranged with respect to the lineof feed, to the plane in which the work advances and to the verticalthat the axis of the pin 14 extends downwardly and convergently to wardsthe line or feed from front to back as disclosed in Figs. 1, 2 and 3.

One extremity of the lever 13 is forked as indicated at 13 to embrace. afriction-roller 18 disposed laterally of a reciprocating bending orcreasing member 19 which is slidingly mounted in a channel 20 providedin the bracket 16. A cover 21 is providedto confine the member 19 torectilinear movement during the operation of the machine and a screw 22(Figs. 2 and 4) which passes loosely through a slot 23 in the member 19,of the channel 20 to hold the cover 21 in place.v Notches 21, 19 and 16are provided in the cover, the bending or creasing member and thebracket, respectively, to clear the needle-bar; The lower end of thebending or creasing member 19 is chisel-pointed as indicated at 19 andpreferably its intersecting faces are disposed. at right angles. To thebracket 16 is secured by a screw as a strip-gauge 25 having a shallownotch 25 at its forward free end.

The plate 17 and bracket 16 attached thereto are detachably connected bythe screws 26 to base=plate 27. The baseplate 27 is cut away to receivethe component parts of the strip-guide proper which comprise anangle-piece 28 having intersecting flanges 28 and 28 disposedrespectively in planes inclined to a vertical plane through the line offeed and the horizontal plane in which the work advances. In other wordsthe apex of the angle-piece 28 i. e., the line of intersection of theflanges, extends in a direction parallel to the axis of the pin 14downwardly and conver 'ently with respect to the direction of ieedh Theflange 28 is provided with an overhanging lip 28 which gauges the widthof the portion of the strip intended to reinforce the feather channeledin the sole. The strip-guide also comprises an edgegauge 29 havingvertical and horizontal flanges 29 and 29, respectively, and a creaseorbend-holding member 30 with a rearwardly extending projection 30 (Figs.5 and 6) having an ironing edge 30 disposed laterally of the verticalflange 29 of the edge-gauge 29 and above its horizontal flange 29".Thethree parts 28, 29 and 30 are detachably secured to the base-plate 27d by the screws 31, 32 and 33, the last-named two passing throughelongated and countersunk slots which permit lateral adjustment of theedge-gauge and bend-maintaining member, respectively.

To the bottom of the base-plate 27 in any suitable manner is secured abar 34 having at its end adjacent the needle a work-supporting plate 35which is apertured as indicated at 36 (Fig.3) to receive the needle.

The attachment is intended for the special purpose of applying areinforcing strip 37, see Fig. 7, to the margin of a shoe sole 38between a feather 39 channeled therefrom and the outside edge of thesole. Stitches 10 are passed through the marginal flange of thereinforcing strip and close as possible to the base of the verticalflange. The attachment previously described in detail enables The shoesole is positioned on top of the work-supporting plate 35 with itsfeather held vertical by the outside of flange 28 of the angle-piece 28and the strip 37 is conducted to the stitching point from a source ofsupply through the gage 25 and angle piece 28 and under the creaseorbendholding projection 30. While the machine is operating the bendorcrease-forming member 19 is reciprocated and its chisel point 19"intermittently strikes against the desirably as this to be done withease.

member,

piece 28 bends it into substantially the form shown in cross-section inFig. '7' and in this form it is maintained by the lateral projection 30until it reaches the stitching point or at least a point in closeproximity thereto. The member 19 may be actuated by any moving part ofthe machine but the take-up 9 is employed to actuate it. in the machineillustrated, being already timed so as to withdraw the bendorcrease-forming member 19 from Contact with the strip while it is beingadvanced by the needle so as to reduce as much as possible theresistance to the passage 01 the strip through the attachment.

Having thus set forth the nature of the invention, what I claim hereinis 1. A strip-guide having an angular guiding channel in combinationwith a member cooperating therewith and movable relative thereto andautomatic means for imparting repeated movements to said member duringnormal operation to bend a strip longitudinally in its passage throughthe stripguide.

2. A strip-guide having an angular guiding channel in combination with amember cooperating therewith and reciprocatory with respect thereto andautomatic means for reciprocating said member repeatedly to bend andcrease a strip longitudinally.

3. A strip-guide having an angular guiding channel in combination with amember cooperating therewith and reciprocatory with respect thereto forbending or creasing a strip longitudinally, said member being movable ina path at a substantial angle to the extent of the channel and automaticmeans for reciprocating said member repeatedly for the purpose 4:. Astrip-guide having an angular guiding channel in combination with areciprocatory member movable transversely to the channel and in a pathintersecting the apex of the channel and automatic means forreciprocating said member repeatedly during normal operation tolongitudinally bend or crease a strip of material between said memberand said channel.

A strip-guide comprising an angular ber, a creaseor bend-holding memberadjacent the delivery end of the guide, in combination with a creaseorbend-forming member cooperating with said angular member of the guide tobend a strip into angular form and automatic means for repeatedly movingsaid crease or bend forming member toward and from the angular memberduring normal operation.

6. A strip-guide comprising an angular member, a cooperatingedge-guiding mem her, and a creaseor bend-holding member adfacent thedelivery end of the guide, in combination with a creaseor bend-forming Imember cooperating with said angular memset forth.

a cooperating edge-guiding meinber of theguide to bend a strip intoangular form, said edge-guiding member and said creaseor bend-holdingmember being separately adjustable to accommodate strips oi? differentwidths.

7. A sewing machine having stitch-torn ing and work-advancing mechanismincluding a needle, in combination with an angular strip-guide, a membermovable relative to said strip-guide to bend or crease a striplongitudinally in its passage through the guide, and actuating meanstorsaid member acting to disengage it from the work during the feedthereof.

8. A sewing machine having stitclrtorming and work-advancing mechanismincluding a needle, in combination with an angular strip-guide, a membermovable relative to said strip-guide to bend or crease a striplongitudinally in its passage through the guide, and actuating means forsaid member acting to disengage it from the work during the feedthereof, said means including a lever operatively connected to saidmember and connections between said lever and a moving element of thesewing machine.

9. A sewing machine having stitch-forming and work-advancing mechanismincluding a needle, in combination with an angular strip-guide, a membermovable relative to said strip-guide to bend or crease a striplongitudinally in its passage through the guide, and actuating means forsaid member, said means including a lever connected to said member andconnections be tween said lever and a movable element of the sewingmachine.

10. A sewing machine having stitch-forming and work-advancing mechanisminclud ing a needle and a take-up, in combination with an angularstrip-guide, a member movable relative to said strip-guide to bend orcrease a strip longitudinally in its passage through the guide, andactuating means for said member, said means including a leveroperatively connected to said member and a link connecting said lever tosaid takeaip. r

11. A strip-guide comprising an anglepiece with flanges disposedapproximately horizontally and vertically but at a downward inclinationfrom front to back, an edgeguiding lip overhanging and carried by one ofsaid flanges, an edge-guiding member adjustable relative to the other ofsaid flanges, and a bendor crease-holding member, in combination with aslidable member for bending or creasing a strip against saidangle-piece, means for slidably sustaining said member at an inclinationto both flanges of the angle-piece and transverse to the length thereof,a lever sustained by said means and operatively connected with saidmember, and means for operating said lever timed to hold the member outof cont-act with the strip when the work is being advanced.

12.1n combination, a strip-guide having an angular guiding channel,means for feeding a strip longitudinally of the channel and movablemeans for intermittently pressing the strip into the angle of thechannel to crease or bend the same longitudinally as it passes throughthe guide.

13. A sewing machine having stitch-forming and work-advancing mechanism,in combination with an angular guide for guiding a strip to thestitch-forming mechanism, movable means for intermittently pressing thestrip into the angle of the guide to crease or bend the samelongitudinally as it passes therethrough and means for operating saidcreasing or bending means.

14. A sewing machine having stitchforming mechanism and step-by-stepworki'eeding mechanism, means for guiding a strip to the stitch-formingand work-feeding mechanisms, and means for intermittently applyingpressure to the strip to bend or crease the same longitudinally, saidmeans so constructed and arranged as to apply the bending pressure tothe strip when. it is stationary and to release the strip when it isbeing moved forwardly by the feeding mechanism. r

In testimony whereof, I have name to this specification.

PARK A. HERB.

signed my

